 Once the breach was large enough, the assault began under heavy fire from two contiguous bastions held by the defenders, and was hampered by hides the defenders added to the wall to partially fill the breach.Casualties amongst the British soldiers were heavy as the troops sought an entry point, while being caught in a constant cross-fire.Finally, the breach was located first by Captain Renny, 40th Regiment of Foot (later the South Lancashire Regiment), who was killed in the act of attempting to get through the breach.